Does this survey go to the email address that we specified on the original survey that Pimax gave on their Kickstarter account page? I’m backer #67** and haven’t ever received email to that address yet.

Remember that it are not all kickstarter numbers have an reward… some supported only with a smaller amount of cash… i believe that some time ago Robin told that backer 1 was a 1 dollar pledge.
and if i do not remember wrong there was some pledges with multiple HMD’s.
So the question are do we rely know how many HMD´s they have to send to backers?

Yes we do, around 5500 units total will be sent to Kickstarers. The Kickstarter page lists how many pledges for each reward were made.

My theory is Pimax sent out all the remaining surveys for two reasons: first, so they could figure out how many parts to order for each type of headset, and second, to stop people who got the survey from constantly asking “where is my headset, I got the survey, it should have shipped by now!”